BACKGROUND OF THE INVENTION
Field of the Invention
[0001] The invention relates to an image processing system for converting inputted color
image data into color image data according to a plurality of coloring materials including
specific colors.
Related Background Art
[0002] Hitherto, when input image data of RGB is developed into ink colors, as a method
of performing a color correction in accordance with color reproducing characteristics
of an input/output apparatus, it is a general method whereby a masking process is
performed by using an arithmetic operating process and a correction of γ characteristics
is performed by using a lookup table.
[0003] However, in a system for forming an image by using coloring materials having specific
colors of O (orange), B (blue) as set out in EP-A-0 571 926, and the like other than
the colors of CMYK, the conventional method has problems such that in order to perform
a high accurate color reproduction, a construction of the system becomes complicated
and costs rise.
[0004] Hitherto, in case of developing image data of RGB into ink colors and printing by
a printer, when the user finely adjusts an ink density, the RGB data of an original
image is converted into predetermined ink colors and ink densities are finely adjusted
on the basis of an instruction of the user for the converted ink colors.
[0005] Hitherto, however, since the fine adjustment of the ink densities has been performed
for the ink colors on the basis of the instruction of the user, for instance, when
there are total five ink colors of C (cyan), M (magenta), Y (yellow), B (blue), and
O (orange), unless the user has advanced knowledge, it is difficult to set adjustment
amounts for five colors, respectively, and it is impossible to perform an adjustment
to obtain a desired output color.
[0006] In a first aspect, the present invention provides an image processing system as set
out in claim 1.
[0007] In a second aspect, the present invention provides an image processing method as
set out in claim 8.
[0008] An embodiment of the invention raises a precision of a color reproduction by a plurality
of coloring materials including specific colors by performing an interpolating process
according to color components.
[0009] The above and other aspects and features of the present invention will become apparent
from the following detailed description and the appended claims with reference to
the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
[0010]
Fig. 1 is a block diagram showing an outline of an image processing system according
to an embodiment;
Fig. 2 is a block diagram of a gradation conversion & error dispersion unit in the
image processing system shown in Fig. 1;
Fig. 3 is a block diagram of an image processing unit (RGB → ink colors);
Fig. 4 is an explanatory diagram of an input media matrix table;
Fig. 5 is an explanatory diagram of an output media matrix table;
Fig. 6 is an explanatory diagram showing relations among a CMY cube which was quantized
and eight points near an inputted value;
Fig. 7 is an explanatory diagram of an input media matrix table showing a cube to
obtain a value of C data of virtual CMY data and eight points near the inputted value;
Fig. 8 is an explanatory diagram of a cube for obtaining a value of M data of the
virtual CMY data;
Fig. 9 is an explanatory diagram of a cube to obtain a value of Y data of the virtual
CMY data;
Fig. 10 is an explanatory diagram of an output media matrix table showing a cube to
obtain C ink of ink color data and eight points near the inputted value;
Fig. 11 is an explanatory diagram of a cube to obtain M ink of the ink color data;
Fig. 12 is an explanatory diagram of a cube to obtain Y ink of the ink color data;
Fig. 13 is an explanatory diagram of a cube to obtain K ink of the ink color data;
Fig. 14 is an explanatory diagram of a cube to obtain B ink of the ink color data;
Fig. 15 is an explanatory diagram of a cube to obtain O ink of the ink color data;
Fig. 16 is a block diagram of an image processing unit (RGB → ink color) of the invention;
Fig. 17 is a diagram of a picture plane for the user to visually perform a fine adjustment;
Fig. 18 is a diagram for explaining a change in each inclination when C, M, and Y
in Fig. 7 is finely adjusted in the plus direction;
Fig. 19 is a diagram for a tone reproduction showing a change in each inclination
when C, M, and Y in Fig. 7 is finely adjusted in the minus direction;
Fig. 20 is a diagram for a tone reproduction showing a change in inclination of each
CMY data when the entire table in Fig. 7 is finely adjusted in the plus direction
and minus direction; and
Fig. 21 is a processing flowchart for a fine adjustment set in the user.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[Embodiment 1]
[0011] Fig. 1 is a block diagram showing an example of a system of an embodiment according
to the invention.
[0012] Reference numeral 10 denotes a color image input apparatus; 20 an image processing
apparatus; and 30 an image output apparatus. As a color image input apparatus 10,
a scanner for generating image data by exposing and scanning an original image, a
host computer for forming an arbitrary image (computer graphics (CG)) on the basis
of a display picture plane by using application software, or the like is considered.
The image output apparatus according to the embodiment forms an image onto a recording
medium such as a woven fabric or the like by using a recording head of a type such
that a film boiling is caused in a plurality of inks including specific color inks
(O and B) by a heat energy and liquid droplets are emitted. As recording media, there
can be mentioned various materials such as cloth silk (cotton and silk), thread which
is used for an embroidery, wallpaper, paper, film for OHP, plate-like material such
as alumite or the like, and other various materials to which predetermined liquid
crystals can be applied by using an ink jet technique. The cloth silk includes all
of woven textiles, unwoven textiles, and other cloth materials irrespective of a raw
material, a manner of weaving, and a manner of knitting. Image data 100 of R, G, and
B each having 256 gradations is sent from the image input apparatus 10 to the image
processing apparatus 20. In Fig. 2, the RGB image data inputted to a gradation conversion
& error dispersion unit 21 is gradation converted and RGB image data 110 in which
an error occurring upon conversion is processed by an error dispersion method is formed.
[0013] Fig. 3 shows an internal structure of a portion to process an ink color development
from the RGB data.
[0014] The gradation converted RGB data 110 is inputted to a simple conversion unit 22 and
converted into CMY data 120, respectively.
[0015] In the simple conversion unit 22, values of the RGB data 110 are simply inverted
and values of the CMY data 120 are obtained as follows.
[0016] The CMY density data (hereinafter, referred to as CMY data) 120 which was simply
converted is collated with data in an input media matrix table 23, thereby calculating
virtual CMY density data (C'M'Y' data) 130.
[0017] The matrix table 23 is a lookup table in which values of the C'M'Y' data corresponding
to representative values of the CMY data which is inputted (Fig. 4).
[0018] In the embodiment, virtual CMY density data in which the RGB data that is inputted
is converted by using a 3-dimensional matrix table corresponding to input media is
shown by using real numbers and can be set to a value of 0 or less or 255 or more.
[0019] In the embodiment, as a virtual density, the density is standardized to a Macbeth
density. By standardizing to the Macbeth density as mentioned above, a correction
based on input characteristics corresponding to the input media and a correction based
on output characteristics corresponding to the output media can be separately performed.
Further, by showing the standardized C'M'Y' data (virtual density data) by real numbers,
the conversion error can be minimized.
[0020] Since the input media matrix table differs depending on the input media, a plurality
of input media matrix tables corresponding to the input media are prepared. A table
corresponding to the input media is automatically set by a CPU (not shown).
[0021] Each value of the C'M'Y' data 120 is shown by real numbers.
[0022] By performing the color correction to the CMY image data by using the lookup table
corresponding to the input media, a distortion which the CMY image data 120 has and
which is based on the input media can be properly corrected.
[0023] As shown in Fig. 6, the C'M'Y' data corresponding to each CMY data inputted belongs
to a CMY cube. The representative value of the data that is inputted in the matrix
table is stored at each lattice point of the cube at the upper stage in Fig. 6. When
the CMY data is inputted by values other than the representative values on the table,
the C'M'Y' data 130 is obtained by predicting from the ink color data of the representative
values at eight points surrounding the input CMY data.
[0024] The converted C'M'Y' data shown by the real numbers is collated with an output media
matrix table 24, thereby calculating ink color data (CMYKBO) shown by integers. C
denotes cyan, M magenta, Y yellow, K black, B blue, and O orange (B and O are specific
colors).
[0025] On the basis of a fact that the characteristics of the output media matrix table
are different every output media, a plurality of output media matrix tables are previously
stored in correspondence with output media such as nylon, cloth, and the like. The
corresponding table is automatically set to the output media by the CPU (not shown).
[0026] A method of obtaining each color of the virtual CMY density data (C', M', Y') 130
will now be described in detail hereinbelow.
<Method of obtaining C'>
[0027] In Fig. 7, values are obtained on the basis of a presumption such that they have
linear characteristics in the cube.
[0028] Now, assuming that the input values are set to R, G, and B, they are simply converted
into CMY as follows.
[0029] C' is obtained by CX, MX, and YX and the representative values at eight points near
the input media matrix table.
Calculations on a C axis:
Calculations on an M axis:
[0031]
Calculation on a Y axis:
[0032]
<Method of obtaining M'>
[0033] In Fig. 8, values are obtained on the basis of a presumption such that they have
linear characteristics in the cube.
[0034] Now, assuming that the input values are set to R, G, and B, they are simply converted
into CMY as follows.
[0035] M' is obtained by CX, MX, and YX and the representative values at eight points near
the input media matrix table.
Calculations on the M axis:
Calculations on the C axis:
[0037]
Calculation on the Y axis:
[0038]
<Method of obtaining Y'>
[0039] In Fig. 9, values are obtained on the basis of a presumption such that they have
linear characteristics in the cube.
[0040] Now, assuming that the input values are set to R, G, and B, they are simply converted
into CMY as follows.
[0041] Y' is obtained by CX, MX, and YX and the representative values at eight points near
the input media matrix table.
Calculations on the Y axis:
Calculations on the C axis:
[0043]
Calculation on the M axis:
[0044]
<Development from the virtual CMY to the ink colors>
[0045] The virtual CMY density data 130 obtained as mentioned above is developed into the
ink colors. The 3-dimensional matrix table 24 is also used in the development. Ink
color data 200 is calculated from the virtual CMY density data 130 which is inputted
and the values of the ink color data which is outputted.
[0046] Fig. 5 shows an output media matrix table. That is, Fig. 5 shows a lookup table in
which the representative values of the virtual CMY density data and the values of
the ink color data corresponding to them have been stored. When the values of the
virtual CMY density data 130 which is inputted coincide with the values on the table,
it is sufficient to output in the ink colors corresponding to them. However, when
they do not coincide with the values on the table, they are developed into the ink
colors by predicting from the ink color data of the representative values at eight
points surrounding the virtual CMY density data 130 which is inputted. The matrix
table 24 has different values depending on a raw material (silk, nylon, polyester,
etc.) which is outputted.
[0047] The development into the ink colors from the virtual CMY density data 130 will now
be described in detail hereinbelow.
<Determination of the value of C ink color>
[0048] On the basis of a presumption that the value of the C ink color has linear characteristics
in the cube, the C ink color is calculated by linearly interpolating as shown in Fig.
10.
Calculations on the C axis:
Calculations on the M axis:
[0050]
Calculation on the Y axis:
[0051]
<Determination of the value of M ink color>
[0052] On the basis of a presumption that the value of the M ink color has linear characteristics
in the cube, the M ink color is calculated by linearly interpolating as shown in Fig.
11.
Calculations on the M axis:
Calculations on the C axis:
[0054]
Calculation on the Y axis:
[0055]
<Determination of the value of Y ink color>
[0056] On the basis of a presumption that the value of the Y ink color has linear characteristics
in the cube, the Y ink color is calculated by linearly interpolating as shown in Fig.
12.
Calculations on the Y axis:
Calculations on the C axis:
[0058]
Calculation on the M axis:
[0059]
<Determination of the value of K ink color>
<Determination of the value of B ink color>
<Determination of the value of 0 ink color>
[0063] Finally, the calculated values are normalized to 0 to 255, respectively.
[0064] In the input media matrix table 23 and output media matrix table 24, the input image
data is divided into upper bits and lower bits and the lattice point data corresponding
to each apex of the cube to which the input image data belongs is obtained on the
basis of the upper bits. The foregoing interpolating process is realized on the basis
of the lower bits and the lattice point data.
[0065] As mentioned above, in case of obtaining the ink color data from C"M"Y" data by using
the lookup table, when obtaining C, M, and Y, the linear interpolation is performed
on the basis of eight lattice point data constructing the cubic. When obtaining the
K color, the linear interpolation is performed between kk_0 indicative of an achromatic
color on a CMY space to which the cubic belongs and kk_7. When obtaining B, the linear
interpolation is executed by using bb_0, bb_1, bb_6, and bb_7 constructing a plane
indicative of the B color on the CMY space to which the cubic belongs. When obtaining
O, the linear interpolation is carried out by using oo_0, oo_3, oo_4, and oo_7 constructing
a plane showing the O color in a manner similar to the case of obtaining B.
[0066] That is, the embodiment uses the interpolating method corresponding to the characteristics
which the ink colors have, specifically speaking, the characteristics such that the
K color is formed by isochromatically mixing the C, M, and Y colors, the B color is
formed by isochromatically mixing the C and M colors, and the O color is formed by
isochromatically mixing the M and Y colors.
[0067] As mentioned above, by using the method corresponding to the characteristics which
the ink color has, a good color balance of each ink color data is obtained.
[0068] According to the embodiment described above, a color matching can be improved by
using the 3-dimensional matrix table without using the masking process and gamma correction
conversion. Further, the ink colors of CMYKBO can be calculated from the three factors
of the virtual CMY data. By independently having the table of the input media and
the table of the output raw materials, it is possible to develop into the ink color
from the RGB data of various combinations. Since only the table data is processed,
a processing speed can be improved.
[0069] The invention can be made correspond to various output conditions by changing the
output media matrix table in correspondence with the kind of ink or the number of
inks.
[Embodiment 2]
[0070] Embodiment 2 is a modification of the embodiment 1 and is realized by adding an ink
density fine adjusting function based on a manual instruction of the user to the system
shown in Fig. 1.
[0071] Fig. 16 shows an internal structure of a portion for performing a process to develop
the RGB data into the ink colors in the embodiment. Portions having the same constructions
as those in the image processing system in the embodiment 1 shown in Fig. 3 are designated
by the same reference numerals.
[0072] In the embodiment 2, a density adjustment based on a manual instruction of the user
is performed by an ink density fine-adjustment unit 25 to the C'M'Y' data 130 converted
by the input media matrix table 23.
[0073] Converted C"M"Y" data 140 is converted into the C_out M_out Y_out Knout B_out O_out
data 200 by the output media matrix table 24.
[0074] Processes regarding the adjustment of the ink density will now be described in detail
hereinbelow.
(Ink density fine-adjusting process)
[0075] Values of the fine adjustment which are set by the user on a picture plane of Fig.
17 have a range of 50 in the plus direction and 50 in the minus direction, namely,
a range from 50 to 150 by setting 100 with regard to the entire value of C, M, and
Y and each of them to a reference.
[0076] Fig. 18 is a graph showing a change in inclination of each density when the user
increases numerical values of parameters of C, M, and Y.
[0077] Fig. 19 is a graph showing a change in inclination of each density when the user
decreases numerical values of parameters of C, M, and Y.
[0078] Fig. 20 is a graph showing a change in inclination when the entire parameters are
increased or decreased.
[0079] An inclination at 300 in Figs. 18, 19, and 20 shows an inclination when the fine
adjustment is not performed (a fine adjustment value is equal to 100).
[0080] Fig. 21 is a flow in case of performing the fine adjustment.
[0081] First, a check is made to see if the execution of the fine adjustment has been instructed
by the user (step S101).
[0082] When it is instructed to execute the fine adjustment, a check is made to see if a
value of param lies within a range from 0 or more to 50 or less (S102). A process
is performed in accordance with a discrimination result.
[0083] "param" shows the fine adjustment value set by the user. "Input" shows the C'M'Y'
data 130 which is inputted to the ink density fine-adjustment unit 25. "Output" denotes
the C'M'Y' data after completion of the fine adjustment, namely, the C"M"Y" data 140.
[0084] When it is instructed to perform the fine adjustment for the C, M, and Y parameters,
the following processes are executed for each of C, M, and Y.
(i) Process when 0 ≤ param ≤ 50 (S103)
Output = (Input*255)/(255 - param)
(ii) Process when -50 ≤ param < 0 (S104)
Output = 255*(Input + param)/(255 + param)
[0085] Subsequently, a check is made to see if the execution of the fine adjustment for
the entire parameters has been instructed (S105).
[0086] When it is instructed to perform the fine adjustment for the entire parameters, the
following process is executed to all of C, M, and Y (S106).
[0087] The C"M"Y" data 140 is calculated by the above procedure.
[0088] As mentioned above, when the RGB data is converted into the ink color data, the user
can output at a desired density. The adjustment can be also performed by only the
fine adjustment of CMY in spite of a fact that the specific colors (blue, orange)
are treated.
[0089] According to the embodiment as mentioned above, the user can finely adjust the ink
density by only the fine adjustment of CMY.
[0090] It is also possible to form a 1-dimensional lookup table for each color component
of C'M'Y' on the basis of the above arithmetic operating equations.
[0091] The above embodiment can be applied to a system constructed of a plurality of equipment
(for instance, host computer, interface equipment, printer, reader, and the like)
or can be also applied to an apparatus (for example, copying apparatus or the like)
comprising one equipment.
[0092] Processes similar to those of the embodiments can be also realized by a method whereby
a storage medium in which a program of software to accomplish the above embodiments
has been stored is supplied to a system or an apparatus, the system or apparatus reads
out the program stored in the storage medium, and the CPU (not shown) executes the
program.
[0093] As a storage medium to supply the program, for example, it is possible to use a floppy
disk, a hard disk, an optical disk, a magnetooptic disk, a CD-ROM, a CD-R, a magnetic
tape, a non-volatile memory card, an ROM, or the like.
[0094] The present invention is not limited to the foregoing embodiments but many modifications
and variations are possible within the scope of the appended claims of the invention.
1. Bildverarbeitungssystem mit:
einer Eingabeeinrichtung (10) zum Eingeben von Farbbilddaten, die spezifischen Farben
entsprechende Farbkomponenten nicht umfassen;
einer Speichereinrichtung zum Speichern einer Tabelle (24) zum Bewirken, daß die Farbbilddaten,
die die den spezifischen Farben entsprechenden Farbkomponenten nicht umfassen, Ausgangsbilddaten
entsprechen, die aus einer Vielzahl von Aufzeichnungsmaterialien einschließlich der
spezifischen Farben entsprechenden Farbkomponenten bestehen; und
einer Entwicklungseinrichtung (20) zum Entwickeln der eingegebenen Farbbilddaten in
Ausgangsbilddaten, die aus der Vielzahl von Aufzeichnungsmaterialien einschließlich
der spezifischen Farben entsprechenden Farbkomponenten bestehen, unter Verwendung
der Tabelle,
wobei die Entwicklungseinrichtung dazu ausgelegt ist, den Entwicklungsprozeß unter
Verwendung eines Interpolationsprozesses gemäß den Arten von den Aufzeichnungsmaterialien
entsprechenden Farbkomponenten auszuführen.
2. System nach Anspruch 1, wobei die Entwicklungseinrichtung (20) dazu ausgelegt ist,
den Entwicklungsprozeß unter Verwendung eines Interpolationsprozesses, der bei einem
Erhalten einer Schwarzkomponente Schwarzkomponentendaten von auf einer achromatischen
Achse in einem den eingegebenen Farbbilddaten entsprechenden Interpolationskörper
vorhandenen Gitterpunkten verwendet, als den Interpolationsprozeß auszuführen.
3. System nach Anspruch 1 oder 2, wobei die Entwicklungseinrichtung (20) dazu ausgelegt
ist, den Entwicklungsprozeß unter Verwendung eines Interpolationsprozesses, der bei
einem Erhalten der den spezifischen Farben entsprechenden Farbkomponenten den spezifischen
Farben entsprechende Farbkomponentendaten von auf einer den spezifischen Farben entsprechenden
Ebene in einem den eingegebenen Farbbilddaten entsprechenden Interpolationskörper
vorhandenen Gitterpunkten verwendet, als den Interpolationsprozeß auszuführen.
4. System nach Anspruch 1, 2 oder 3, wobei die Entwicklungseinrichtung (20) dazu ausgelegt
ist, den Entwicklungsprozeß unter Verwendung eines Interpolationsprozesses, der eine
Acht-Punkt-Interpolation verwendet, als den Interpolationsprozeß auszuführen.
5. System nach einem der vorstehenden Ansprüche, ferner mit einer Bilderzeugungseinrichtung
(30) zum Erzeugen eines Bilds auf einem gewebten Stoff auf der Grundlage der Ausgangsbilddaten.
6. System nach Anspruch 5, wobei die Speichereinrichtung eine Vielzahl von Tabellen (24)
in Übereinstimmung mit Arten von gewebten Stoffen speichert.
7. Vorrichtung nach Anspruch 5, wobei die Speichereinrichtung eine Vielzahl von Tabellen
(24) in Übereinstimmung mit Arten der Aufzeichnungsmaterialien speichert.
8. Bildverarbeitungsverfahren mit den Schritten:
Eingeben von Farbbilddaten, die spezifischen Farben entsprechende Farbkomponenten
nicht umfassen;
Speichern einer Tabelle (24) zum Bewirken, daß die Farbbilddaten, die die den spezifischen
Farben entsprechenden Farbkomponenten nicht umfassen, Ausgangsbilddaten entsprechen,
die aus einer Vielzahl von Aufzeichnungsmaterialien einschließlich der spezifischen
Farben entsprechenden Farbkomponenten bestehen; und
Entwickeln der eingegebenen Farbbilddaten in Ausgangsbilddaten, die aus der Vielzahl
von Aufzeichnungsmaterialien einschließlich der spezifischen Farben entsprechenden
Farbkomponenten bestehen, unter Verwendung der Tabelle,
wobei der Entwicklungsschritt einen Interpolationsprozeß gemäß den Arten von den
Aufzeichnungsmaterialien entsprechenden Farbkomponenten verwendet.
9. Aufzeichnungsträger, der Programmanweisungen zum Programmieren einer Verarbeitungseinrichtung
zum Ausführen eines Bildverarbeitungsverfahrens nach Anspruch 8 speichert.
1. Système de traitement d'images comportant :
un moyen d'entrée (10) pour l'entrée de données d'images en couleurs qui ne comprennent
pas de composantes de couleurs correspondant à des couleurs spécifiques ;
un moyen de stockage destiné à stocker une table (24) destinée à faire correspondre
les données d'images en couleurs, qui ne comprennent pas les composantes de couleurs
correspondant auxdites couleurs spécifiques, à des données d'images de sortie constituées
de composantes de couleurs correspondant à une pluralité de supports d'enregistrement
comprenant les couleurs spécifiques ; et
un moyen de développement (20) destiné à développer lesdites données d'image en couleurs
d'entrée en données d'image de sortie constituées de composantes de couleurs correspondant
à ladite pluralité de supports d'enregistrement comprenant lesdites couleurs spécifiques
en utilisant ladite table,
dans lequel ledit moyen de développement est agencé de façon à exécuter le processus
de développement en utilisant un processus d'interpolation en fonction des types de
composantes de couleurs correspondant auxdits supports d'enregistrement.
2. Système selon la revendication 1, dans lequel ledit moyen de développement (20) est
agencé de façon à exécuter le processus de développement en utilisant, en tant que
ledit processus d'interpolation, un processus d'interpolation qui, lors de l'obtention
d'une composante noire, utilise une donnée de composante noire de points de réseau
existant sur un axe achromatique dans un solide d'interpolation correspondant auxdites
données d'images en couleurs d'entrée.
3. Système selon la revendication 1 ou 2, dans lequel ledit moyen de développement (20)
est agencé de façon à exécuter le processus de développement en utilisant, en tant
que ledit processus d'interpolation, un processus d'interpolation qui, lors de l'obtention
desdites composantes de couleurs correspondant auxdites couleurs spécifiques, utilise
des données de composantes de couleurs correspondant auxdites couleurs spécifiques
de points de réseau existant sur un plan correspondant auxdites couleurs spécifiques
dans un solide d'interpolation correspondant auxdites données d'images de couleurs
d'entrée.
4. Système selon la revendication 1, 2 ou 3, dans lequel ledit moyen de développement
(20) est agencé de façon à exécuter le processus de développement en utilisant, en
tant que ledit processus d'interpolation, un processus d'interpolation qui utilise
une interpolation en huit points.
5. Système selon l'une quelconque des revendications précédentes, comportant en outre
un moyen (30) de formation d'image destiné à former une image sur une étoffe tissée
sur la base desdites données d'image de sortie.
6. Système selon la revendication 5, dans lequel ledit moyen de stockage stocke une pluralité
de tables (24) en correspondance avec des types d'étoffes tissées.
7. Appareil selon la revendication 5, dans lequel ledit moyen de stockage stocke une
pluralité de tables (24) en correspondance avec des types desdits supports d'enregistrement.
8. Procédé de traitement d'images comprenant les étapes qui consistent :
à appliquer en entrée des données d'image en couleur qui ne contiennent pas de composantes
de couleurs correspondant à des couleurs spécifiques ;
à stocker une table (24) destinée à faire correspondre les données d'images en couleurs,
qui ne contiennent pas les composantes de couleurs correspondant auxdites couleurs
spécifiques, avec des données d'image de sortie constituées de composantes de couleurs
correspondant à une pluralité de supports d'enregistrement comprenant les couleurs
spécifiques ; et
à développer lesdites données d'image en couleurs d'entrée en données d'image de sortie
constituées de composantes de couleurs correspondant à ladite pluralité de supports
d'enregistrement comprenant lesdites couleurs spécifiques en utilisant ladite table,
dans lequel ladite étape de développement utilise un processus d'interpolation
en fonction des types de composantes de couleurs correspondant auxdits supports d'enregistrement.
9. Support d'enregistrement stockant des instructions de programme pour programmer un
moyen à processeur afin d'exécuter un procédé de traitement d'images selon la revendication
8.